Many thanks to SRAA contributor, Martin Knotek, for sharing the following recording and notes:

Broadcaster: The Buzzer

Date of recording: August 08, 2025

Starting time: 19:17 UTC

Frequency: 4625 kHz

Your location: Zlin, Czech Republic

Receiver and antenna: http://websdr.ewi.utwente.nl:8901/

Mode: Single Side Band

Notes: The Buzzer online 08. 08. 2025 v 19:17 UTC.

You can hear the Russian anthem about halfway through the recording.

The Buzzer (UVB-76) is a mysterious Russian shortwave radio station that has broadcast a constant buzzing sound since the late 1970s, occasionally interrupted by voice messages in Russian, with its true purpose still unconfirmed.